Luke 22:34

The cock shall not crow this day, &c.— As it is plain from this passage, and from the event, that the cock actually crew before Peter's third denial, we must certainly take the words of St. Luke and St. John for the common time of cock-crowing, which probably did not arrive till after the cock, which Peter had heard, had crowed the second time, and perhaps oftener; for it is well known, that those vigilant animals, on any little disturbance, often crow at midnight, or before it, though they do not quit their roost till about three in the morning, which was usually called the cock-crowing. See on Mark 13:35 and the Inferences on Mark, xi